CSS Writing Modes Level 3 without "webkit" prefix, along with syntax updates to the most recent CR. As part of the work, a non-standard value "horizontal-bt" is removed from -webkit-writing-mode.



Working draft or equivalent

Status in Chromium


Enabled by default (tracking bug) in:

  • Chrome for desktop release 48
  • Chrome for Android release 48
  • Android WebView release 48

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

  • Shipped/Shipping
  • Shipped/Shipping
  • No signal
  • Strongly positive


Last updated on 2020-11-19